An error has occurred.

Horizontal thin film dryers are continuously operated contact dryers and used for a broad range of applications under vacuum, atmospheric pressure and overpressure.They allow the effective drying of slurries, slurries, pastes and filter cakes with short residence time, low product hold-up and superior mixing efficiency. Horizontal thin film dryers are characterized by low power consumption, self-cleaning heating surfaces and good accessibility.

Functional descriptionHorizontal thin film dryers consist of a horizontal externally heated shell with end covers, the inlet and outlet nozzles for feed, vapour and final product, nozzles for the heating medium and a rotor with screwed on elements supported in external bearings. The wet product fed through the inlet nozzle is conveyed steadily by the rotor elements along the heated dryer wall in a thin film, allowing an optimum heat transfer and a high evaporation performance.

Vapours pass counter-currently to the product flow and leave the dryer close to the feed nozzle. Entrained particles are removed in the wet zone. Moisture levels of a few tenth of a percent up to 5% and more can be achieved. The residence time of the product is typically between 5 and 15 minutes.

Contivac NDPThe CONTIVAC NDP processor was developed by Buss-SMS-Canzler for use in production processes with special hygienic requirements. This processor combines the advantages of continuous thin film drying with a special rotating spray nozzle that allows for CIP cleaning. The individually adjustable heating and cooling zones in the thin film dryer open up new opportunities for thin film drying technology to be used in complex processes. The basic operations of mixing, reacting, flashing and drying can be carried out in the same machine, with several different substance streams being fed into the processor simultaneously. The CONTIVAC NDP processor offers manufacturers in the pharmaceutical, fine chemical industries and in the food and pet food industries new possibilities for improvement, which are not available with conventional batch machines.Batch operated dryers have problems with products, which pass through a sticky, viscous phase during drying. Such cases require very long residence times, which can cause unwanted side reactions, thermal damage to the product, and/or colour changes. Experience has proven that the residence time in the CONTIVAC NDP processor can be reduced up to 500 times. Further advantages compared to batch systems result from the low investment and operating costs.

Buss-SMS-Canzler is a leading international supplier of thermal separation solutions for difficult products and mixtures. We are the world’s leading supplier of thin film evaporation technology, this is due to the long-standing experience of the three former companies Luwa, SMS, Buss and Canzler. This long experience and expertise is now incorporated into Buss-SMS-Canzler. For our customers around the world we develop and manufacture machines and plants for evaporation, processing of highly viscous materials, membrane filtration and drying. Our experience and our test centre allow us to develop customer specific process solutions by applying tailor-made equipment and complete systems. Buss-SMS-Canzler partners you as consultant, designer and manufacturer through all project stages: from process layout, pilot tests, engineering, mechanical design, manufacturing and documentation, to installation, start up and after sales service.

For more than 50 years we have supplied different types of dryers, adapted to a large variety of applications throughout the world, currently more than 500 dryers. Based on our longstanding experience and supported by lab and pilot tests, the specialists at Buss-SMS-Canzler select the most suitable drying technology for your application. Lab tests in our lab equipment show general feasibility. Tests in our pilot plants provide the basis for the design of our dryers. These studies are not only carried out upon our customers’ request, but also to investigate new applications on our own development projects, as for example the TDI recovery in the CFT dryer.

The Buss-SMS-Canzler range of dryers carries out the following process steps: drying, cooling, heating, calcining, reacting, mixing, sublimation and sterilisation. The product range covers heating temperatures of -20°C to 400°C, process pressures of 0,01 to 30 bar and residence times from seconds up to several hours. Buss-SMS-Canzler offers a program of dryers using different operating principles tailored to meet the individual process requirements when treating products with particular characteristics and specific drying behaviour. Vertical and horizontal thin film dryers with thin product layers on the heat exchange surface, the ROVACTOR®
with specific paddles to convey lumpy wet feed, the REACTOTHERM® with self-cleaning hooks for sticky products as well as the CFT dryer with its mechanically agitated fluid bed are technically mature solutions for a large variety of different drying applications.